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Date: Wed, 14 Feb 2018 13:38:03 +0800 From: Ying Xue <ying.xue@...driver.com> To: <davem@...emloft.net>, <ktkhai@...tuozzo.com>, <jon.maloy@...csson.com> CC: <netdev@...r.kernel.org>, <syzkaller-bugs@...glegroups.com>, <tipc-discussion@...ts.sourceforge.net> Subject: [PATCH net v4 6/7] tipc: Introduce __tipc_nl_net_set Introduce __tipc_nl_net_set() which doesn't hold RTNL lock. Signed-off-by: Ying Xue <ying.xue@...driver.com> --- net/tipc/net.c | 15 ++++++++++++--- net/tipc/net.h | 1 + 2 files changed, 13 insertions(+), 3 deletions(-) diff --git a/net/tipc/net.c b/net/tipc/net.c index 719c592..1a2fde0 100644 --- a/net/tipc/net.c +++ b/net/tipc/net.c @@ -200,7 +200,7 @@ int tipc_nl_net_dump(struct sk_buff *skb, struct netlink_callback *cb) return skb->len; } -int tipc_nl_net_set(struct sk_buff *skb, struct genl_info *info) +int __tipc_nl_net_set(struct sk_buff *skb, struct genl_info *info) { struct net *net = sock_net(skb->sk); struct tipc_net *tn = net_generic(net, tipc_net_id); @@ -241,10 +241,19 @@ int tipc_nl_net_set(struct sk_buff *skb, struct genl_info *info) if (!tipc_addr_node_valid(addr)) return -EINVAL; - rtnl_lock(); tipc_net_start(net, addr); - rtnl_unlock(); } return 0; } + +int tipc_nl_net_set(struct sk_buff *skb, struct genl_info *info) +{ + int err; + + rtnl_lock(); + err = __tipc_nl_net_set(skb, info); + rtnl_unlock(); + + return err; +} diff --git a/net/tipc/net.h b/net/tipc/net.h index c7c2549..c0306aa 100644 --- a/net/tipc/net.h +++ b/net/tipc/net.h @@ -47,5 +47,6 @@ void tipc_net_stop(struct net *net); int tipc_nl_net_dump(struct sk_buff *skb, struct netlink_callback *cb); int tipc_nl_net_set(struct sk_buff *skb, struct genl_info *info); +int __tipc_nl_net_set(struct sk_buff *skb, struct genl_info *info); #endif -- 2.7.4
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